/*-
 * Copyright (c) 2009 Jonathan Anderson
 * All rights reserved.
 *
 * WARNING: THIS IS EXPERIMENTAL SECURITY SOFTWARE THAT MUST NOT BE RELIED
 * ON IN PRODUCTION SYSTEMS.  IT WILL BREAK YOUR SOFTWARE IN NEW AND
 * UNEXPECTED WAYS.
 * 
 * This software was developed at the University of Cambridge Computer
 * Laboratory with support from a grant from Google, Inc. 
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/capability.h>

#include <errno.h>
#include <fcntl.h>

#include <QString>

#include "cap.h"
#include "Cache.h"
#include "CacheFile.h"
#include "Client.h"
#include "UserAngel.h"

using namespace std;
using namespace userAngel;



QString CacheFile::argString() const
{
	QString str = QString("%1 files: ").arg(files.size());
	for(QList<File>::ConstIterator i = files.begin(); i != files.end(); i++)
		str += QString("{ name '" + i->filename() + "', FD %1 }")
		        .arg(i->fd());

	return str;
}

void CacheFile::readArguments(Client *client, userAngel::UserAngel::Datum d)
{
	int32_t fileCount = d.toInt();

	int persistence = 0;
	UserAngel::Datum datum = client->ua().recv();
	persistence = datum.toInt();

	persistent = (persistence > 0);

	for(int i = 0; i < fileCount; i++)
	{
		datum = client->ua().recv(1);
		QList<int> fds = datum.fds();

		if(fds.size() != 1)
			throw ClientFatalException(client,
				QString("Received %1 FDs, not 1").arg(fds.size()));

		int fd = fds.at(0);
		QString name = datum.toString();

		cap_rights_t rights = 0;
		if(!cap_getrights(fd, &rights)) throw CError("cap_getrights()");

		files << File(name, fd, rights);
	}
}


void CacheFile::run(Client *client)
{
	for(QList<File>::Iterator i = files.begin(); i != files.end(); i++)
	{
		Cache::instance().store(*i, persistent);
		client->ua().send(i->capName());
	}
}

